Cellular Structure And Function

Front 1

Selective Permeability

Back 1

The cell has control over what comes in and what goes out.

Front 2

Phospholipid Bilayer

Back 2

In a biological membrane, the phospholipids are organized into a bilayer, which serves as the framework in which the other components of the membrane are embedded.

Front 3

Transport Proteins

Back 3

Proteins that create tunnels through the plasma membrane.

Front 4

Fluid Mosaic Model

Back 4

The organization of individual molecules floating on the surface of the plasma membrane, creating a pattern.

Front 5

Diffusion

Back 5

The net movement of particles from an area where there are more particles of the substance to an area where there are fewer particles.

Front 6

Dynamic Equilibrium

Back 6

A chemical equilibrium between a forward reaction and the reverse reaction where therate of the reactions are equal

Front 7

Facilitated Diffusion

Back 7

The process of spontaneous passive transport (as opposed to active transport) of molecules or ions across a biological membrane via specific transmembrane integral proteins.

Front 8

Osmosis

Back 8

The diffusion of water across a selectively permeable membrane.

Front 9

Hypotonic Solution

Back 9

If a cell is placed in a solution that has a lower concentration of dissolved substances, the cell is in a hypotonic solution.

Front 10

Hypertonic Solution

Back 10

Is one with a higher concentration of solutes outside the cell than inside the cell. When a cell is immersed into a hypertonic solution, the tendency is for water to flow out of the cell in order to balance the concentration of the solutes

Front 11

Active Transport

Back 11

The movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.

Front 12

Endocytosis

Back 12

The taking in of matter by a living cell by invagination of its membrane to form a vacuole

Front 13

Exocytosis

Back 13

A process by which the contents of a cell vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane.

Front 14

Homeostasis

Back 14

A cell's survival depends on maintaining balance.

Front 15

Polar

Back 15

Pertaining to a compound exhibiting polarity or dipole moment, that is a compound bearing a partial positive charge on one side and a partial negative chargeon the other.

Front 16

Non polar

Back 16

Pertaining to a compound that is nonionic or does not dissociate into ions.

Front 17

Hydrophollic

Back 17

Having a tendency to mix with, dissolve in, or be wetted by water

Front 18

Hydrophobic

Back 18

Tending to repel or fail to mix with water.

Front 19

Isotonic Solution

Back 19

A solution that has the same salt concentration as cells and blood. Isotonic solutions are commonly used as intravenously infused fluids in hospitalized patients.